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General Category => Amstrad CPC hardware => Topic started by: Ynot.zer0 on 19:29, 20 December 12

Title: PSU Power question for Bryce
Post by: Ynot.zer0 on 19:29, 20 December 12
okay, it's open to more people than Bryce..... but I'm sure he'll know off the top of his head  :laugh:




If, someone wished to have a 6128 powered by a Li-ion battery rather than from the mains, what would I need to purchase?
Let's also assume that the 6128 has a HxC attached as an internal A: drive.


What would it take to power this? a 5v 2A Li-ion rechargeable battery? I'm no electronics guru, I dabble with the odd Arduino or BeagleBone but I'm more a C coder than a proper hardware / electronics person.


any guidance appreciated.  (I can hear Gryzor already asking, "Why would you want to do that?"....)
Title: Re: PSU Power question for Bryce
Post by: arnoldemu on 19:37, 20 December 12
A line of 'C' batteries a foot long and lots of tape?

Sorry.

Title: Re: PSU Power question for Bryce
Post by: Bryce on 21:32, 20 December 12
I'll give you an answer anyway: :)

Lets take a typical laptop battery such a Thinkpad battery like this one: Lenovo ThinkPad Battery 33 41U3196 bei notebooksbilliger.de (http://www.notebooksbilliger.de/lenovo+thinkpad+battery+33+41u3196?refcampaign_id=0c59b7c191b6f18a10b2b1e157b4f1a8&refcampaign_id=0c59b7c191b6f18a10b2b1e157b4f1a8)
In this case it's a 14.4V  2600mAh battery. So it could theoretically supply 14.4V at 2.6A for a whole hour. In reality it can't, it's probably designed to supply about 800mA for a little over 3 hours. At 2600mA it would get very hot.
We only need 5V, which 2.88 times smaller, so theoretically it could supply 7488mA at 5V for an hour or 2A for 3.7hours.

Of course getting the 14.4V down to 5V has huge losses, so in a real situation it would probably keep the CPC running for about 2.5 hours reliably.

If you are intending to experiment with something like this, try and get a battery that's above, but very close to 5V, ie: 6 to 7.5V, that way you have the least losses converting it down, but it will still supply above 5V right down to the last minutes.

Did you want the CPC to be able to recharge it too? :D

Bryce.
Title: Re: PSU Power question for Bryce
Post by: Gryzor on 13:09, 24 December 12
Next question: how many of these babies will I need to power the monitor too?
Title: Re: PSU Power question for Bryce
Post by: Bryce on 13:15, 24 December 12
Take a look at the specs for the Tesla Sports car, that should give you an idea :D

Bryce.
Title: Re: PSU Power question for Bryce
Post by: Gryzor on 13:25, 24 December 12
Wow, is it going to be so fast?
Title: Re: PSU Power question for Bryce
Post by: Ynot.zer0 on 13:46, 24 December 12
Quote from: Gryzor on 13:09, 24 December 12
Next question: how many of these babies will I need to power the monitor too?


That's easily sorted, using a portable Sony PS1 5" LCD screen running off 7v  8)


Cheers Bryce... maybe next year, I'll finally get around to making my fully portable CPC 6128....
Title: Re: PSU Power question for Bryce
Post by: Bryce on 14:21, 24 December 12
Modded into a laptop case? :)

Bryce.
Title: Re: PSU Power question for Bryce
Post by: Ynot.zer0 on 14:36, 24 December 12
Quote from: Bryce on 14:21, 24 December 12
Modded into a laptop case? :)


Well, after doing a garage clear out, I have found 3-4 old laptops that could be donor bodies... so that is one option!




DC/DC Converter Regulator 12V Stepdown to 5V 3A 15W Car Power Supply Module | (http://www.ebay.co.uk/itm/120968522028?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)


On a side-note, I've just bought some of these to help me power a Teensy 3.0 that I'm using to display the temp/fuel gauges in my hot-rod car.  It allows me to drop the 12v battery down to the 5v needed for the arduino.  This is what prompted me to ask the original question.




and just incase anyone is interested (it's not CPC related, but I have been thinking how I could get a 6128 fitted inside the car somehow - a merge of my 2 fav. pastimes!) - here's a photo of the item that has been distracting me away from the CPC toys:
(http://i963.photobucket.com/albums/ae120/_tonypig777/IMG_20121106_134516.jpg)

Title: Re: PSU Power question for Bryce
Post by: Bryce on 15:39, 24 December 12
Nice wheels. I'm suprised you have any money left for 8-bit stuff after filling the tank.

Bryce.
Title: Re: PSU Power question for Bryce
Post by: steve on 16:05, 24 December 12
Quote from: Ynot.zer0 on 14:36, 24 December 12

.... but I have been thinking how I could get a 6128 fitted inside the car somehow - a merge of my 2 fav. pastimes!

That reminds me of an issue of Practical Computing from the late seventies which featured a PET2001 which was installed in a luxury car (I forget which one).
Title: Re: PSU Power question for Bryce
Post by: beaker on 18:18, 24 December 12
Very nice, please say you're going to respray it black so it looks nice and menacing  :D Brightwork looks in nice condition. Hope you put up some more pics so we can drool over it.
Title: Re: PSU Power question for Bryce
Post by: Bryce on 18:29, 24 December 12
Yeah, bigger ones this time. I'd like to see the condition of the dash too :)

Bryce.
Title: Re: PSU Power question for Bryce
Post by: Ynot.zer0 on 18:55, 24 December 12



knock yourself out with all the photos: Pictures by _tonypig777 - Photobucket (http://s963.photobucket.com/albums/ae120/_tonypig777/)


and just for Bryce, here's a shot of the dash:
(http://i963.photobucket.com/albums/ae120/_tonypig777/IMG_20121120_155342_zps2cf1c7e5.jpg)


and those rectangle holes will house these (FFWD to about 1minute):
OLED teensy 3 OLED gauge temp fuel (http://www.youtube.com/watch?v=3AxFn2wcXOg#)




right, I better get this back to a CPC topic soon, or Gryzor will move the thread to the 'off topic' bucket  ::)
Title: Re: PSU Power question for Bryce
Post by: Bryce on 19:00, 24 December 12
Ok, now I'm impressed, a work of art Tony.

Bryce.
Title: Re: PSU Power question for Bryce
Post by: beaker on 19:57, 24 December 12
I agree with Bryce, it looks fantastic. How many hours did you sink into the body with all the changes? Also what V8(?) engine are you running?
Title: Re: PSU Power question for Bryce
Post by: Gryzor on 19:38, 25 December 12
Who cares if it's off-topic; it's wonderful.
Title: Re: PSone portable CPC in&with "The Last V8"?
Post by: OCT on 01:30, 30 December 12
Quote from: Ynot.zer0 on 13:46, 24 December 12

That's easily sorted, using a portable Sony PS1 5" LCD screen running off 7v  8)
Nice one, but only half the CPC's horizontal MODE 2 resolution.
These were heavily modded from 2004 approx. not just into HTPC cases (offline AVR code includes clocks and game console emulation), cf. Was man aus nem PSOne schönes machen kann - LCDs - VDR Portal (http://www.vdr-portal.de/board18-vdr-hardware/board11-lcds/p144753-was-man-aus-nem-psone-sch%C3%B6nes-machen-kann/#post144753:)
(http://www.vdr-portal.de/index.php?page=Attachment&attachmentID=2919) (http://www.vdr-portal.de/index.php?page=Attachment&attachmentID=2919)
BTW, I have an adapter modeled after the PSone base (f)lying around somewhere to screw these screens to a flat surface without the need to damage anything, as a template if there's anyone who'd have the equipment these days to mold or fab them.
Quotemaybe next year, I'll finally get around to making my fully portable CPC 6128....
With a dock in the car dashboard, fittingly running the postapocalyptic "Last V8" game (http://en.wikipedia.org/wiki/The_Last_V8)?
Title: Re: PSU Power question for Bryce
Post by: TFM on 03:57, 30 December 12
It would really be great to have a DIY for integrating a CPC in a car!!!
Title: Re: PSU Power question for Bryce
Post by: steve on 05:21, 30 December 12
You should not try to type while you are driving  ;D
It should be easier to install a gx4000 than a CPC.
Title: Re: PSU Power question for Bryce
Post by: TFM on 07:40, 30 December 12
Well, voice recognition is also doable on a CPC (No, I don't want to discuss this ;-))
Title: Re: PSU Power question for Bryce
Post by: beaker on 13:21, 30 December 12
So.... Siri's coming to FutureOS then.... (reverse psychology, I get ya  :laugh: )
Title: Re: PSU Power question for Bryce
Post by: Gryzor on 18:48, 30 December 12
Wouldn't that require 4MB?
Title: Re: PSU Power question for Bryce
Post by: beaker on 19:49, 30 December 12
 :laugh: Don't mention 4MB around Bryce!!! I reckon we'd have the 512k modules by now if you guys didn't wind him up so much. I've had to buy a Yarek module off ebay this month to tide me over  ;)
Title: Re: PSU Power question for Bryce
Post by: steve on 20:39, 30 December 12
Does Yarek sell the 4MB module on ebay?
Title: Re: PSU Power question for Bryce
Post by: beaker on 22:33, 30 December 12
Sorry, I should have qualified that with the words second-hand. I don't think Yarek is selling any. This is the module I bought - RAMBOX 512K AMSTRAD CPC SCNEIDER RANGE | eBay (http://www.ebay.co.uk/itm/230891138117) and Bryce is kindly modifying some cables so I can use it in conjunction with the LowerROM and MegaFlash.
Title: Re: PSU Power question for Bryce
Post by: TFM on 08:43, 31 December 12
Ah, no, for a basic sound recognition even a 464 is enought. No CPC will ever understand Beakers dialect. But it's easy to do a knock-knock recognition (I lack better words in English). The CPC Booster has a sound-in function. I used this for tests. So it's not a problem to let the CPC do some regognitions. Let's say ... 32 is not a problem. And faster than Beakers Sandy or what name this lady had ;)
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